Aminoalcohol and biocide compositions for aqueous based systems

Abstract

Biocidal compositions and their use in aqueous media, such as metalworking fluids, the compositions comprising a biocidal agent; and a non-biocidal primary amino alcohol compound of the formula (I): wherein R 1 , R 2 , R 3 , R 4 , and R 5 are as defined herein.

What is claimed is: 
     
       1. A biocidal composition comprising:
 a biocidal agent that is 1,3,5-tris(2-hydroxyethyl)-s-triazine, 1,2-benzisothiazolin-3-one, 2-methyl-4-isothiazolin-3-one, octylisothiazolinone, dichloro-octylisothiazolinone, or dibromo-octylisothiazolinone; or a combination of 5-chloro-2-methyl-4-isothiazolin-3-one with 2-methyl-4-isothiazolin-3-one; and 
 a primary amino alcohol compound of the formula (II): 
 
       
         
           
           
               
               
           
         
         wherein 
         R 2 , is linear or branched alkyl, or phenyl and R 4  is linear or branched alkyl, or R 2 , R 4  and the carbon to which they are attached form a cycloalkyl ring, provided that R 2  and R 4  together contain 3 or more carbon atoms, and wherein the compound contains at least 6 carbon atoms and no more than 13 carbon atoms. 
       
     
     
       2. The composition of  claim 1  further comprising one or more compounds selected from the group consisting of 2-amino-2-methyl-1-propanol, 2-amino-1-ethanol, 1-amino-2-propanol, bis(2-hydroxypropyl)amine, tris(2-hydroxypropyl)amine, bis(2-hydroxyethyl)amine, tris(2-hydroxyethyl)amine, 2-(2-aminoethoxy)ethanol, and 3-amino-4-octanol. 
     
     
       3. The composition of  claim 1  wherein R 2  and R 4  together contain up to 11 carbon atoms. 
     
     
       4. The composition of  claim 1  wherein R 2  and R 4  are each independently linear alkyl. 
     
     
       5. The composition of  claim 1  wherein R 2  and R 4  together with the carbon to which they are attached form a cycloalkyl ring. 
     
     
       6. The composition of  claim 1  wherein the amino alcohol is selected from (1-aminocyclohexyl)methanol, (1-aminocyclooctyl)methanol, 2-amino-2-phenyl-1-propanol, or (1-aminocyclopentyl)methanol, or the amino alcohol is a mixture of 2-amino-2-methyl-1-hexanol and 2-amino-2-ethyl-1-pentanol, or a mixture of 2-amino-2-methyl-1-octanol and 2-amino-2-ethyl-1-heptanol and 2-amino-2-propyl-1-hexanol. 
     
     
       7. A method of inhibiting the growth of microorganisms in an aqueous-based system comprising adding to said system an effective amount of a biocidal composition according to  claim 1 . 
     
     
       8. A method according to  claim 7  wherein the aqueous-based system is a metal working fluid. 
     
     
       9. A metalworking fluid concentrate comprising a biocidal composition according to  claim 1 . 
     
     
       10. A metalworking fluid comprising a biocidal composition according to  claim 1 . 
     
     
       11. A metalworking fluid comprising water and a metalworking concentrate, wherein the metalworking concentrate comprises a biocidal composition according to  claim 1 . 
     
     
       12. A composition in which microbial growth is inhibited comprising: an aqueous based system; and a biocidal composition according to  claim 1 . 
     
     
       13. The composition according to  claim 12  wherein the aqueous based system is latexes, water-based paints, water-based coatings, caulks, adhesives, tape joint compounds, mineral slurries, water-cooling systems, personal care products, soaps and detergents, disinfectants, cleaners, sanitizers, pesticide products, oilfield water, and water-based fluids used in oilfield applications such as drilling muds, fracturing fluids, and hydrotest fluids. 
     
     
       14. The composition according to  claim 12  wherein the aqueous based system is a metal working fluid.